ELEVATOR WIRELESS POWER SUPPLY
First Claim
1. An elevator system comprising:
- an elevator car arranged to travel along a hoistway, the elevator car including an electrically powered car subsystem;
a propulsion system positioned along the hoistway for imparting motion to the elevator car, the propulsion system including a plurality of primary windings aligned along the hoistway; and
a secondary winding assembly coupled to the elevator car and configured to generate a current to power the car subsystems when adjacent primary windings of the plurality of primary windings are electrically energized.
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Accused Products
Abstract
An elevator system may include an elevator car having an electrically powered car subsystem and a guide rail constructed and arranged to guide the elevator car along a hoistway and in a direction of travel. Primary windings of the system are positioned along the hoistway, and a permanent magnet assembly is coupled to the elevator car. Together, the primary windings and the permanent magnet assembly define a linear motor for imparting motion to the elevator car in response to a drive signal. A secondary winding assembly of the elevator system is coupled to the elevator car and is located adjacent to the permanent magnet assembly along the direction of travel. In operation, the secondary winding assembly generates a current to power the car subsystem.
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Citations
22 Claims
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1. An elevator system comprising:
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an elevator car arranged to travel along a hoistway, the elevator car including an electrically powered car subsystem; a propulsion system positioned along the hoistway for imparting motion to the elevator car, the propulsion system including a plurality of primary windings aligned along the hoistway; and a secondary winding assembly coupled to the elevator car and configured to generate a current to power the car subsystems when adjacent primary windings of the plurality of primary windings are electrically energized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A wireless power supply for an elevator car including a linear motor for imparting vertical motion to the elevator car in a hoistway, the linear motor including a permanent magnet assembly coupled to the elevator car for magnetic levitation, the wireless power supply comprising:
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a plurality of primary windings distributed along the hoistway; a first secondary winding engaged to the elevator car; and a second secondary winding engaged to the elevator car, and wherein the plurality of windings are disposed between the first and second secondary windings, and the first and second secondary windings are configured to generate a current to power a car subsystem. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification